Engraving-machine.



6 Sheets-Sheet I.

Patented Oct. l4, I902.

Z 5 ablfoowa nul I l nu mwk an No. 7u,o94.

.1. BRADY.

ENGBAVING MACHINE.

(Application filed May 20, 1902.)

(No Model.)

w: NORRIS PETERS co,mom|.1ruo, msumurdn, o. c

No. 7I|,094. Patented Oct. 14, I902.

J. BRADY.

ENGRAVING MACHINE.

(Application filed May 20, 1902.)

m: NQRms' zrcns do. PMOYO-UYHQ. WASHINGTON, u. c.

2 0 m M c 0 d e t n G l a P Y D A R B 9 n O N ENGRAVING MACHINE.

(Application filed May 20, 1902.)

6.Shaets-Slieet 3.

(No Model.)

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No. 7n,094. v Patented on. M, I902.

.1. BRADY.

ENGRAVING MACHINE.

(Application filed May 20, 1902.)

(No Model.) 6 Sheets-Sheet 4.

m: nonms Pnzns co. PHOTDLITHQ. wnsnmcmu n c N0. 7ll,094.- Patented Oct.l4, I902.

J. BRADY.

ENGRAVING MACHINE.

(Application filed May 20, 1902.)

BShaeir-Sheet 5.

@(No Model.)

m. 7||,o94. Patented-OcLM, 1902'.

J. BRADY;

ENGBAVING MACHINE.

(Application filed May 20, 1902.) (No Model.) 6 Sheets-Sheet B.

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UNITED STATES PATENT OFFICE.

JAMES BRADY, OF BROOKLYN, NEW YORK, ASSIGNOR TO RUSSELL & ERWVINMANUFACTURING COMPANY, OF NEW BRITAIN, CONNECTICUT, A COR- PORATION O FCONNECTICUT.

ENGRAVlNG-MACHINE.

SPECIFICATION forming part of Letters Patent No. 711,094, dated October14, 1902.

Application filed May 20,1902.

To all whom, it may concern:

Be it known that 1, JAMES BRADY, a citizen of the United States,residing at Brooklyn, Kings county, New York, have invented cer- 5 tainnew and useful Improvements in Engraving-Machines, of which thefollowingis a full, clear, and exact description. 7 My invention relatesto engravingmachines, the object being to provide improved :0 mechanismfor engraving or sinking dies and forming forces to be used therewith,the leading feature of the invention being to provide mechanism wherebya force and a die may be simultaneously produced.

In the machine two cuttingto01s are employed and both are caused to movesim ultaneously and in an opposite relation to each other, so as to workout a cameo on one side and an intaglio on the other side. The design isdetermined by a pattern which is moved in front of a tool which I shallterm a stylus. The stylus may be mounted in such a manner relatively toboth cuttingtools as to impart thereto similar movement 2 5 in a greateror lesser degree.

' To facilitate an understanding of the preferred form of my invention,reference is made to the accompanying drawings, in which Figure 1 is aside elevation of an engravingmachine embodying my invention. a planview thereof. Fig. 3 is a view of the right-hand end of the machineshown in Figs. 1 and 2. 5 of the machine shown in Figs. 1 and 2. Fig.

5 is a vertical section on the plane of the line 5 5, Fig. 2. Fig. 6 isa perspective view of the end of the cutter-supporting boom, showing auniversally-jointed support. Fig. 7 isa perspective view of another partof the boom, showing a connection for the stylus. Fig. Sis anotherpartofsaidboom,showingamounting for the cutting-tools and manner of drivingthem. Fig. 9 is a perspective view of a portion 5 of the frame. Fig. 10is a perspective View of a detail coacting with the part shown in Fig.9. Fig. 11 is a diagrammatic View graphically illustrating the mainprinciple of my invention.

Fig. 2is

Fig. 1is a view of the left-hand end.

Serial 110.108.178. (No man.)

1 is the main frame.

2 is a driving-shaft suitably mounted in the frame.

3 is a pulley fixed on the shaft 2.

1 is a pulley loose on shaft 2.

5 is a driving-belt leading from a suitable source of power (not shown)to either of the pulleys 3 or 1.

G is a belt-shifter whereby the belt 5 may be shifted from the pulley 3to pulley 4, or vice versa, to start or stop the machine.

7 is a shaft bearing thereon worms 8 S1. Eitherorboth of the worms maybe connected to the shaft 7 by means of a feather-spline 9, so that thesaid worms may be shifted longitudinally on said. shaft.

10 is a pulley on shaft 7.

11 is a belt leading from a pulley 12 on shaft 2 to the pulley 10.

From the foregoing it willbe seen that the rotation of shaft 2 rotatesshaft 7 and worms 7o 8 S1.

13 13 are worm-gears mounted in suitable bearings 14 14, said gearsbeing in mesh with the worms 8 81. Upon the same shaft with each of theworm-gears 13 13 suitable faceplates or carriers are mounted and each isprovided with clamping devices for the purposes hereinafter described.These face-plates or carriers are numbered 15 16.

17 is a shaft supported in suitable bearings and arranged parallel tothe shaft 7.

18 is a shaft connecting the gears 7 and 17 by means of suitablebevel-gears 1U 19, the arrangement being such that the motion of shaft 7is transmitted to shaft 17, the speed and direction of rotation of shaft17 being the same as shaft 7.

20 is a worm on shaft 17, which worm may be shifted thereon in the samemanner as worm 81. 21 is aworm-gear in mesh therewith. The shaft ofworm-gear 21 carries at its end a face-plate or carrier 22, providedwith suitable clamping devices for the purposes hereinafter described;The face-plates or carriers 15 22 may be termed work-car- 5 riers, whilethe plate 16 may be termed the pattern-cam'ier. The worms and thewormgears are such that the plates 15 and 22,

which face each other, revolve simultaneously and in the same directionand at the same speed.

In the preferable construction the worms 81 20, the worm-gears meshingtherewith, and

the face-plates carried thereby are mounted upon the carriage 23, havingan adjustable movement longitudinally upon the bed-plate of frame 1. Theshaft of worm-gear 21 is spliued theretov and has a sliding movement inits bearings, as best seen in Fig. 5, said sliding movement beingcontrollable by an adjusting-screw 24 and an operating-handle 25. Bythis means the face-plate 22 may be moved forward or backward andadjusted to any desired position.

26 is a boom, the same being universally mounted at 27, (see Fig. 6,) soas to have a free swinging movement at its opposite end. Mounted uponthe boom 26 is a carriage 28. (See view Fig. 8.) This carriage 28supports a revoluble shaft 29, which carries in turn two cutting-tools3O 31, said cutting-tools being arranged one at each end of said shaft29.

32 is a pulley on shaft 29.

33 34 are pulleys mounted upon the carriage 28 and over and betweenwhichthe belt 35 may pass. The said belt 35 also'passes under pulley 32,so that the motion of the belt 35 will cause the rapid rotation of theshaft 29 and the cutting-tools 3O 31.. The carriage 28 is preferablyadjustable upon the boom 26, and suitable devices being providedforexample, set-screws 36to clamp said carriage in any desired position.The shape and the method of connection of the parts may be modified inmany ways. The boom 26 supports another carriage 37, which may beadjustable upon said boom in the same manner as the carriage 28. Thecarriage 37 supports what I shall term a stylus 38, the alinement ofwhich corresponds with either one of the tools 30 31, but arranged tooneside thereof. The stylus 38 may be adjustable in the carriage 37, anysuitable means-for example, a set-nut 39-being provided to clamp thestylus in the desired position; The carriage 37 and the associated partsare best seen in Fig. 7.

The free end of the boom 26 receives its support in a fork 40, carriedby a slide 41, in

turn vertically movable in a guidewayin the upright standard 42. Theseparts 40 to 42 are bestse'en in Figs. 9 and 10. Upon the rear of theguide 41 is a projection 43, having a screw-threaded passage therein.

44 is a slot in the upright standard 42 permitting the passage of theprojection 43.

45 is a vertical threaded shaft passing through the threaded openinginprojection 43.

The rotary movement of shaft 45 will impart to the slide 41 a verticalmovement. Consequently as said shaft 45 is rotated the fork 40 will beelevated or depressed, according to the direction of rotation of saidshaft. By this means the free end of the boom 26 may be raised orlowered, and consequently sired degree of the stylus 38 andcutting-tools 31 31 are similarly moved. It will be observed that thefork 40 will not prevent the lateral movement of the boom 26.

46 is a spring normally tending to draw the free end of the boom intothe fork.

47 is a pattern carried by the face-plate 16. The stylus 38 bearsagainst the face of the pattern47. The pattern 47 is revoluble with theface-plate 16. Consequentlyand because the boom 26 is at its free endlaterally movable any irregularities in the face of the pat tern will befollowed by the stylus-point, the boom moving back and forth to permitsaid stylus to traverse the irregular surface of the pattern. The spring46 tends to cause the stylus to bear yieldingly and with any depressureagainst the face of the pattern.

48 is a worm-wheel fixed on the revoluble shaft 45. 49 is a worm meshingtherewith and driven by pulley 50 from pulley 51, said pulleys 50 and 51being connected by a belt 52. The pulley 51 is mounted on thedrivingshaft 2.

From the foregoing it will be seen that assuming that the boom ismounted so that the stylus 38 is located in the center of the pattern 47and the machine is started the pattern will be slowly revolved, andsimultaneously the free end of the boom will be slowly elevated ordepressed, so that the path of travel of the stylus over the face of thepattern is in a very fine convolute curve working out toward the edge ofthe pattern, the said boom being moved back and forth as the saidstyluspoint follows the irregularities of the pattern.

This movement of the boom imparts a corre sponding movement to thecutter-tools 3O 31, which may bear against suitable blanks of metal.These blanks are shown in the drawings and numbered 53.54. Either onemay represent a blank in which a die is to be formed and the other ablank in which a force is to be formed, which force must necessarily fitthe die, because during the operation of the machine the cutters work toproduce the same design-one an intaglio, the other a cameo. The blanks53 54 revolve simultaneously and at the same speed as the pattern 47,and the cutters remove the metal from the face of the said blank asdesired by means of a rapid rotary motion imparted by the belt 35, whichmay be driven as follows: The belt 35 is endless and may pass over anydesired arrangement of pulleys which will lead said belt '35 to thepulley 55, fixed upon the driving-shaft 2. The particular arrangement ofpulleys shown possesses desirable advantages, because it permits of theadjustment of the cutter-carriage 28021 the boom without disturbing thebelt. arrangement and starting with the plan view shown in Fig. 2 thebelt leaves the cuttercarriage and passes to the right over an idler 56,thence to idler 57, thence to a driving- "pulley 55, Fig. 3, thence toidler 58, thence In this to a horizontal idler 59, thence through themachine to the opposite end thereof, to and around the idler 60, Fig. 1,thence to idler 61, directly to the rear of and close to the universalsupport for the boom 26, and thence to the pulleys on thecutter-carriage.

From the foregoing it will be seen that the belt leads from idler 61 toidler 33 in approximately the line of the boom 26, so that as said boommoves vertically or laterally there is required but little give in thebelt. This may be permitted by supporting any one of the idlers-forexample, the idler -upon atension-frame 62, the same afiording theproper tension and yet permitting the belt to give as required. Thelimit of give of the frame may be stopped or checked in any well-knownmanner-for example, by means of the screw 63.

A diagrammatic view, Fig. 11, graphically illustrates the main featureof myinvention to wit, the simultaneous shaping of a die and a force. Inthis view the same letters are employed as in the other figures, and itis referred to mainly for the purpose of facilitating an understandingof how a single pattern may be employed to simultaneously shape a forceand a die. This view needs no further description than already aflorded.

In order to set the parts in the initial position in which one of thecutters has entered the blank to the desired depth while the othercutter remains upon the surface of the other blank, (in case no neutralpoint is readily available,) the face-plate 22 may be retracted by meansof the adjusting-handle 25. The boom may then be adjusted to its desiredstarting position. The correct position of the cutter 31 is determinedby the styluspoint 38 and cannot vary. The face-plate 22 may be movedforward, forcing the blank 54: into contact with the cutter 30 andagainst the same until the cutter will project into said blank to thedesired depth. When the face-plate 22 is thus adjusted, the work maythen proceed. In the form shown the cutters work from the center of eachwork-block outwa rdly; but this is immaterial.

What I claim is- 1. In an engraving-machine a pair of blankcarriers,means for rotating the same simultaneously, a pattern-carrier and meansfor rotating the same at the same angular speed as the blank-carriers, aboom universally mounted and carrying a stylus adapted to bear againstand traverse the face of the pattern, and carrying oppositely -arrangedcutting-tools located between the blank-carriers and adapted tosimultaneously form a die and a force.

2. In an engraving-machine,a pair of blankcarriers, means for rotatingthe same simultaneously and at the same angular speed, a pattern-carrierand means for rotating the same simultaneously and at the same angularspeed as both of the blank-carriers, a boom universally mounted at oneend, a stylus carried thereby and adjacent to the face of thepattern-carrier, oppositely-arranged cutting- 7 tools carried by theboom and adjacent and between the blank-carriers, means for moving thefree end of the boom horizontally and vertically to cause the stylus tofollow any pattern carried by the pattern-carrier and to cause thesimultaneous production of a die and a force by means of saidcutting-tools.

3. In an engraving-machine,a pair of blank carriers, means for rotatingthe same simultaneously and at the same angular speed, a pattern-carrierand means for rotating the same at the same angular speed as theblankcarriers,a boom universally mounted,a stylus carried therebyadapted to bear against and traverse the face of the pattern, a pair ofcutting-tools mounted in a revoluble shaft in turn mounted upon saidboom both of said outting-tools being located between saidblankcarriers, means for rotating the cutters, and means for moving theboom vertically and horizontally and causing the stylus to normally movetoward the pattern and arranged to simultaneously produce a force and adie.

4. In an engraving-machine,a pair of blank- "carriers, means forrotating the same simultaneously, a pattern-carrier and means forrotating the same simultaneously and at the same angular speed as theblank-carriers, a boom universally mounted at one end and means forelevating and moving laterally the opposite end of the boom, a styluscarried by said boom, a pair of rotary cutting-tools mounted on saidboom and located between said blank-carriers, said cutters being mountedupon the same spindle and in axial alinement and arranged tosimultaneously form a die and a force.

5. In an engraving-machine,a pair of blankcarriers, means for rotatingthe same simultaneously, a pattern-carrier and means for rotating thesame at the same angular speed as the blank-carriers, a boom, a stylus,and a pair of oppositely-arranged rotary cuttingtools adj ustablymounted upon said boom, said cutting-tools being arranged in axialalinement and pointingin oppositedirections, and means for rotating thesame and moving the boom, and arranged to simultaneously form a die anda force.

6. In an en graving-machine, a pair of blankcarriers, means for rotatingthe same simultaneously, a pattern-carrier and means for rotating thesame at the same angular speed as the blank carriers, a boom universallymounted at one end, a horizontally-positioned fork supporting theopposite end of the boom, means for elevating or depressing the fork, astylus carried by the boom and projecting toward the pattern-carrier, apair of oppositely-arranged rotary cutting-tools mounted upon the boomand facing the blank-carriers said tools being in axial alinement, andmeans for rotating said cutting-tools, said parts be- IIO ing arrangedto simultaneously produce a force and a die.

7. In an engraving-machine, a pair of blankcarriers and means forrotating the same simultaneously and at the same speed and in the samedirection, a pattern-carrier, means for rotating the same at the sameangular speed as the blank-carriers, a boom universally mounted at oneend and free to swing and move vertically at the opposite end, means forpositively elevating the free end of said boom, and means for yieldinglycausing the boom to move horizontally in one direction, a stylus carriedby the boom and projecting toward the pattern-carrier, and a pair ofcutting-tools facing in opposite directions mounted in axial alinementon the same shaft and carried by said boom and adapted to simultaneouslyproduce a force and a die.

8. In an engraving-machine, blank-car: riers, said blank-carriers.facing each other, a pattern-carrier, said pattern-carrier beingarranged to one side of said blank-carriers, a pair of rotarycutting-tools located between said blank-carriers, a stylus locatedadjacent to said pattern-carrier and a boom for supporting saidcuttingtools and stylus said parts being arranged to simultaneouslyproduce a force and a die.

9. In an engraving-machine, a pair of blank carriers and means forrotating the same, a

pair of cutting-tools mounted upon the same support located between saidblank-carriers, said cutting-tools facing in opposite directionsand'toward said blank-carriers, one of said blank-carriers beingadjustable toward or away from said cutting-tools, means for rotatingsaid cutting-tools and imparting to said cutting-tools a vertical andhorizontal movement, said parts being arranged to simultaneously producea force and a die.

10. In an engravingmachine, a pair of blank-carriers facing each other,a pair of cutting-tools located between said blank-carriers and facingin opposite directions toward said blank-carriers, means for rotatingsaid cutting-tools, and means for rotating said blank-carriers, saidcutting-tools and blankcarriers being mounted upon a common carriage, aframe supporting said carriage, said carriage being longitudinallyadjustable on said frame, and means for controlling the position of thecutting-points of said cutting: tools relatively to the work carriers,said parts being arranged to simultaneously produce a force and a die.

Signed at New York city, New York, this 16th day of May, 1902.

JAMES BRADY.

Witnesses:

L. VREELAND, R. C. MITCHELL.

